Duster for insecticides



April 20, 1943. w. G. BRUCE DUSTER FOR INSECTICIDES Filed Sept. 14, 19422 Sheets-Sheet l ATTORNEYS April 20, 1943. w. e. BRUCE 2,316,932 rDUSTER FOR INSECTICIDES Filed Sept. 14, 1942 2 Sheets-Sheet 2 ix A4 3Owk/z/x \\\\\E 31 INVENTOR W.G.BRUCE Patented A r. 20, 1943 2 31 9gzDUSTER FOR INSECTICIDES Wesley Gordon Bruce, Dallas, Tex., dedicated tothe free use of the People in the Territory of the United StatesApplication September 14, 1942, Serial No. 458,326

2 Claims. (Cl. 119-159) (Granted under the act of March 3, 18%, as

amended April 30, 1928; 370 0. G. 757) This application is made underthe act of March 3, 1883, as amended by the act of April 30, 1928, andthe invention herein described, if patented, may be manufactured andused by or curtains, a short curtain S is suspended near each set oflong curtains. The short curtain on the exit is of heavy coarse materialfor purposes later described. The passageway is thus essentially for theGovernment of the United States of 5 closed to the wind. A flap 1,mounted on a rigid America for governmental purposes without the frame18, is pivotly attached to the sides of the payment to me of any royaltythereon. housing. A dusting device Id is installed near I herebydedicate the invention herein dethe ceiling and at one end of thehousing. scribed to the free use of the people in the terri- The dustingdevice is illustrated in detail in tory of the United States to takeeffect on the Figures 3 and 4. it comprises a hopper N for granting of apatent to me. insecticidal dusts below which a spreader 36 Thisinvention relates to a mechanical dusting is located. The spreadercomprises a number of apparatus and it is moreparticularly concernednarrow strips 33. S at angles as s o in F with a device for theautomatic application of ure 4. The hopper H has outlets is in itsbotinsecticidal dusts to livestock, such as cattle and 5 tom wall. Asliding dispenser iii, which is operhorses, for the control of externalparasites. ated by a pull member or chain i5 attached to An obj ect ofthis invention is to provide a suitone end of the flap l, is locatedunder the outlets. able structure which is inexpensive to manufac- Thefioor located under the dispenser has pasture and install and which willevenly distribute sages it misaligned with the outlets oi the hopapredetermined amount of insecticidal dust over 20 per, as shown- Thelidin i p n er is attached the backs of animals. at one end to a fixedbracket I! by means of a Other objects of this invention are to providespring l8 and at its other end to the pull mema simple and efiicientmeans of controlling cerber l5 by means of a spring i9. Fixed stops 20tain external parasites of livestock; to provide a and 2! limit movementof the dispenser in either labor-saving device for the application ofinsectidirection. The dispenser is provided with some cidal dusts; and,in general, to provide a device trapping CaVitiBS 2 Which in 0119Position of the which is adaptable to most farm, dairy, and dispenserwill match with some of the outlets l3 ranch conditions and which may beso located and in another position with passages l6. It is that theanimals to be treated must pass through also provided with anothertrapping cavity 23 it on their way to and from a barn, corral, feedwhich at a position of the dispenser difi'erent yard, etc. than thatfirst. mentioned above will match with The following description,considered together an outlet is. with the accompanying drawings, willdisclose The device operates as follows: this invention more fully. Itsconstruction, ar- Animals to be dusted enter at one end in singlerangement and combination of parts are set forth file. As they proceedthrough the passage-way in the following description:

In the drawings:

Figure 1 is aperspective View of a housing for enclosing a dustingdevice,

Figure 2 is a longitudinal section of the housing on the line 22 ofFigure l, the dusting device being shown in elevation,

Figure 3 is a longitudinal section of the dusting device and Figure 4 isa cross section of the dusting device on line 44 of Figure 3.

Referring more particularly to the drawings in which like numeralsdesignate like parts, the device illustrated comprises a frame I, sideWalls 2, end walls 3 and a roof 4, forming a passageway of sutlicientsize to permit livestock to pass through it in single file from one endto the other. A set of long drape curtains 5--5 is suspended from theceiling at each end of the passageway. In addition to the abovementioned 'tional pull on chain I5.

they encounter flap H which is pushed forward and which in turn pullschain i5. This moves the sliding dispenser M to a position whereintrapping cavities 22 match outlets l3 and are filled with insecticidaldust from hopper H. A small animal will push flap 1 forward only farenough to fill trapping cavities 22. Alarger animal will push flap l farenough forward to also fill trapping cavity 23. The sliding dispensercan move only to stop 2!, spring l9 taking care of addi- As the animalpasses through the passage-way flap l drags along its back and finallydrops to the original position, whereupon the dispenser is snapped backagainst stop 20 by spring it. This releases the dust over the spreader20 through which the dust falls and is distributed evenly over the backof the animal. The short curtain at the exit of the passage-way, beingof a heavy coarse material, drags over the back of the animal andbrushes the dust into its hair. The amount of insecticidal dustdispensed can be regulated by varying the size and number of thetrapping cavities in the sliding dispenser.

Experiments have shown that a light applica tion 01 insecticidal dust tothe backs of cattle taching the other end of the dispenser to a fixedmember and stops for limiting the movement of g the dispenser in eitherdirection.

at regular intervals is efi'ective in killing cattle grubs. The dustingmeans herein described will automatically and efiectively distributeinsecticidai dust on the backs of cattle. Such dusting may also beeilective in controlling or at least reducing infections of lice, fliesand other inoutlets in a third position which is such as to dis-.

charge the dusting material, and means for op erating said slidingdispenser so arranged that it may operate the dispenser to either thefirst position or to both the first and second positions and then to thethird position, whereby different quantities of dusting material aredischarged for the two operating positions described, said lastmentioned means comprising a pull member attached to one end of thedispenser, a spring at- 2. A device for dusting powdered material onlivestock comprising a hopper having a plurality of outlets in itsbottom wall, a sliding dispenser located beneath the bottom wall andhaving a plurality of trapping cavities, some of which will align withsome of the outlets in a first position of the dispenser and others orwhich will align with others of the outlets in a second position, all ofsaid cavities being misaligned with said outlets in a third positionwhich is such as to discharge the dusting material, and means for op- 5erating said sliding dispenser so arranged that it may operate thedispenser to either the first position or to both the first and secondpositions and then to the third position, whereby dillferent quantitiesof dusting material are discharged for the two operating positionsdescribed, said last mentioned means comprising a pull member attachedto one end of the dispenser, a spring attaching the other end of thedispenser to a fixed member, stops limiting the movement of thedispenser in either direction and a device operable by animals to bedusted connected to the pull member, the parts being so arranged that asmall sized animal will operate the dispenser to the first mentionedposition only and then to the third position and a larger sized animalwill operate it to both the first and second positions and then to thethird mentioned position.

WESLEY GIORDON BRUCE.

